# Generated by Django 5.2.5 on 2025-08-19 08:54

import django.core.validators
import django.db.models.deletion
from decimal import Decimal
from django.db import migrations, models


class Migration(migrations.Migration):

    dependencies = [
        ('inventory', '0003_remove_supplier_rating'),
        ('manufacture', '0001_initial'),
    ]

    operations = [
        migrations.CreateModel(
            name='BillOfMaterials',
            fields=[
                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('quantity', models.DecimalField(decimal_places=4, help_text='Quantity of component needed per unit of manufactured product', max_digits=10, validators=[django.core.validators.MinValueValidator(Decimal('0.0001'))])),
                ('unit', models.CharField(blank=True, help_text='Unit of measurement for the component (e.g., kg, pieces, meters)', max_length=20)),
                ('created_at', models.DateTimeField(auto_now_add=True)),
                ('updated_at', models.DateTimeField(auto_now=True)),
                ('component', models.ForeignKey(help_text='A component used in manufacturing', on_delete=django.db.models.deletion.CASCADE, related_name='bom_components', to='inventory.product')),
                ('manufactured_product', models.ForeignKey(help_text='The product that is manufactured using this BOM', on_delete=django.db.models.deletion.CASCADE, related_name='bom_manufactured', to='inventory.product')),
            ],
            options={
                'verbose_name': 'Bill of Materials',
                'verbose_name_plural': 'Bills of Materials',
                'ordering': ['manufactured_product__name', 'component__name'],
                'unique_together': {('manufactured_product', 'component')},
            },
        ),
        migrations.CreateModel(
            name='BillOfMaterialsTotal',
            fields=[
                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('total_cost', models.DecimalField(decimal_places=4, default=0, max_digits=12)),
                ('total_weight', models.DecimalField(blank=True, decimal_places=2, max_digits=10, null=True)),
                ('last_calculated', models.DateTimeField(auto_now=True)),
                ('bom', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, related_name='totals', to='manufacture.billofmaterials')),
            ],
            options={
                'verbose_name': 'BOM Total',
                'verbose_name_plural': 'BOM Totals',
            },
        ),
    ]